//** Dynamic Drive Equal Columns Height script v1.01 (Nov 2nd, 06)
//** http://www.dynamicdrive.com/style/blog/entry/css-equal-columns-height-script/

var ddequalcolumns=new Object()
//Input IDs (id attr) of columns to equalize. Script will check if each corresponding column actually exists:
ddequalcolumns.columnswatch=["sidebar_left", "content", "sidebar_right"]

ddequalcolumns.setHeights=function(reset)
{
  var tallest=0
  var resetit=(typeof reset=="string")? true : false
  for (var i=0; i<this.columnswatch.length; i++)
  {
    if (document.getElementById(this.columnswatch[i])!=null)
    {
      if (resetit)
        document.getElementById(this.columnswatch[i]).style.height="auto"
      if (document.getElementById(this.columnswatch[i]).offsetHeight>tallest)
        tallest=document.getElementById(this.columnswatch[i]).offsetHeight
    }
  }
  if (tallest>0)
  {
    for (var i=0; i<this.columnswatch.length; i++)
    {
    if (document.getElementById(this.columnswatch[i])!=null)
      document.getElementById(this.columnswatch[i]).style.height=tallest+"px"
    }
  }
}

ddequalcolumns.resetHeights=function()
{
  this.setHeights("reset")
}

//assign a function to execute to an event handler (ie: onunload)
ddequalcolumns.dotask=function(target, functionref, tasktype)
{ 
  var tasktype=(window.addEventListener)? tasktype : "on"+tasktype
  if (target.addEventListener)
    target.addEventListener(tasktype, functionref, false)
  else if (target.attachEvent)
    target.attachEvent(tasktype, functionref)
}

ddequalcolumns.dotask(window, function(){ddequalcolumns.setHeights()}, "load")
ddequalcolumns.dotask(window, function(){if (typeof ddequalcolumns.timer!="undefined") clearTimeout(ddequalcolumns.timer); ddequalcolumns.timer=setTimeout("ddequalcolumns.resetHeights()", 200)}, "resize")

